129 out of 155 Test Score

Calculate your grade percentage and letter

What grade is 129 out of 155?

Total number of questions or points possible
Questions or points correctly answered
Questions or points incorrectly answered

83.23% B

A score of 129 out of 155 on a test, assignment or class is a 83.23% percentage grade. 26 questions were wrong or points missed.

A 83% is a B letter grade. A letter grade B means good or above average performance. To get the next higher letter grade available, you would need a score of 135 which would be a B+.

The grade point equivalent to a B is a 3.0 GPA for this score.

Letter Grades for 155 question test

Grade Correct Incorrect Percent
A+151 to 1550 to 497.42 to 100.00
A145 to 1505 to 1093.55 to 96.77
A-140 to 14411 to 1590.32 to 92.90
B+135 to 13916 to 2087.10 to 89.68
B129 to 13421 to 2683.23 to 86.45
B-124 to 12827 to 3180.00 to 82.58
C+120 to 12332 to 3577.42 to 79.35
C114 to 11936 to 4173.55 to 76.77
C-109 to 11342 to 4670.32 to 72.90
D+104 to 10847 to 5167.10 to 69.68
D98 to 10352 to 5763.23 to 66.45
D-93 to 9758 to 6260.00 to 62.58
F0 to 9263 to 1550.00 to 59.35

About this calculator

This easy grade calculator can be used for quickly determining the percentage, letter grade and GPA for any test, quiz or exam. It can also be used when calculating an overall score in a class. This page is pre-populated showing the results for the particular calculation 129/155 as a percentage and as a grade. You can access the default calculator here.

To use, input the total number of questions or maximum points available in the "Questions" field. Next either enter the number of correct or incorrect answers in the respective fields. You only need to enter one, the other one will calculate automatically. Your results will appear as you type.

The result will compute the score as a percentage, the letter grade for the score and the GPA for the letter grade. The calculator will also indicate when a score is within one percent of the breakpoint between letter grades where it is appropriate to round up the grade.

Additionally you will see a letter grading scale table which shows every letter grade available for the number of questions on the test. This table indicates the correct and incorrect ranges for each letter grade along with the percentage ranges. Note that on some tests, letter grades are skipped - this is not a mistake. This happens on tests with fewer questions as each question is worth a significant percent of the overall score and significantly moves the letter grade.

FAQ's

Is a 129 out of 155 a good grade?

A score of 129/155 equates to a B. A B is a good grade and demonstrates you know the class material well. Traditionally a B means "above average", however in reality it's about average for most high school students.

How is a percentage calculated for 129 out of 155?

The math is pretty simple to determine the percentage grade on a test as it's simple division and multiplication. The ratio of correct to total number of questions can be expressed as a fraction
correct answers / total questions
The fraction is converted into a decimal using correct answers as the numerator and total questions as the denominator. Divide the correct answers by total questions and you have the answer in decimal form.
correct answers ÷ total questions = decimal
Now to convert into a percent, multiply the decimal times 100. This is your answer.
decimal × 100 = percent answer
In this particular case, the formula for calculating the grade percent 129/155 is
129 ÷ 155 × 100 = 83.23%
On a 155 question test, if you miss 26 and get 129 right, you will have a 83.23%.

How is a letter grade determined for 129 out of 155?

To determine the letter grade, we must make use of a letter grade scale lookup table. You can find one here.

Take the percentage calculated for the test and locate the corresponding range in the percent column. The letter grade for that row is the letter grade for this test.

For this score, we find our 83.23% is in the 83-86% range. This corresponds with the letter grade "B". Thus, a 83.23% grade is a B.

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